Correct Answer: C

Rationale: Acyclovir is an antiviral medication used to treat herpes virus infections, not tuberculosis. Rifampin, Isoniazid, and Pyrazinamide are all commonly used in the treatment of tuberculosis. Therefore, the nurse should not plan to administer Acyclovir to a client with tuberculosis.

Correct Answer: B

Rationale: Administering oxygen therapy is the priority intervention for a client with a pulmonary embolism. Oxygen helps improve oxygenation levels and decrease the workload on the heart. It is crucial to ensure adequate oxygenation before other interventions are initiated. Morphine IV, starting an IV infusion of lactated Ringer's, and initiating cardiac monitoring are important interventions but come after ensuring adequate oxygenation.

Correct Answer: D

Rationale: A pulmonary artery catheter is primarily used to monitor hemodynamic status. It provides essential information on cardiac output, preload, afterload, and overall cardiovascular function. This data helps healthcare providers manage the client's fluid status, cardiac function, and guide treatment interventions in critically ill patients. Monitoring intracranial pressure, spinal cord perfusion, or renal function would require different monitoring devices and techniques, not a pulmonary artery catheter.

Correct Answer: C

Rationale: Following a bronchoscopy, the priority for the nurse is to confirm the gag reflex in the older adult client. This is crucial to ensure that the client's airway is protected and free from any obstruction or aspiration. Monitoring the gag reflex helps in preventing complications such as aspiration pneumonia. While auscultating breath sounds, observing for confusion, and measuring blood pressure are important assessments, confirming the gag reflex takes precedence in this situation to maintain airway patency and prevent potential respiratory complications.

Correct Answer: C

Rationale: Confusion is a common manifestation of pneumonia in older adults. It can result from inadequate oxygenation to the brain due to respiratory compromise. Bradycardia, night sweats, and narrowed pulse pressure are not typically specific findings associated with pneumonia and should be further assessed or monitored, but confusion is a key indicator that warrants immediate attention.